Seiko Cal. 6640 - 625

The 6640-625 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6640 caliber with 22j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-42ab8ff6602b]

Also known as: Shogun, Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1971

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